Building tire casings



June 10, 1930. H. L.. sMlTH 1,762,839

BUILDING TIRE CASINGS Fi'ld Nov. 22. 192e' ing Vthe casing expanded.

Patented June 10, 193

UNITED STATES HARRY I.. SMITH, or OUDAHY, wIsooNsIiv, fAssIGNoR masiaPANY, OF OHICOPEE FALLS, ivrAssAoHusE'r'rsfa' CORPORATIONoF"1vIAss`AoiIU-^" sETTs BUILDING TIREoAsINGs Application mea November22, 192e. sensi No. 150,054..

10 lustrate one embodiment of my invention.

Figure 1 is a front elevation partly in section showing` the tire casingbuilding, sleeve, drum and expanding tube all in assembled relation,

Figure 2 is a side elevation of the drum and building sleeve inassembled relation,

Figure 3 is a fragmentary sectional view showing the building sleevewithdrawn, and

Figure 4 is a similar sectional view showvReferring' to thev drawings, ldesignates generally a rotatable supporting drum, which in the formillustrated comprises side members 2 to which are secured cylindricalmembers 8 as by rivets 4. Members 3 are con-i depth, adapted to receivean inner tube, or

other form of expansible core 9, in collapsed condition. Over drum 1 andtube 9 I slide a building sleeve 10 which as shown' comprises acylindrical member, provided with handles 11 to facilitate handling ofvthe This sleeve forms the building sur and form thebuilding surface ofthe device.

4. A device of the characterV describedk sleeve. face upon which thetire casing is built and to prevent relative rotary movement between thesleeve and drum 1 I provide the sleeve with one or more lugs l2projecting radially cesses 13 formed in the adjacent felly ofv member 2.

In operation, the sleeve 10 is slid over drum l having the inner tube 9collapsed in recess 8, lugs 12seating in recesses 13. I then proceed toconstruct the tire casing 14 on sleeve 10 in any well known manner,after 59 which I withdraw sleeveV 10, by means of handles, 1l,-leavingfthe casing overlying tube 9 asshown-in Figure 3. Inext inate 'Vshape as shown'in Figure 4; Tube9 =is then tube 9 througlra suitablevalve '1 5 thuslex-A .f panding thecasing. 1 4 to substantially tire.

defiated, Ythe casingremoved, and-sleevejlOv` replaced on the drumvready for building the next casing.

It will be evidentthat by myconstruction I provide a device upon whichthe casing is built and expanded without removal from the buildingmachine, and that I secure the positive expanding action of the inflatedinner tube and at the same'time provide a ing.

I claim smooth surface lupon which to build the cas-l A1.A device of thecharacter described comprising a drum adapted to support an expandingdevice and 'removable means adapted to be positioned over said drum andexpanding device to form a tire building surface. V

Y 2. A device of the character describedcomprising Va support for anexpansible tube,

a sleeve adapted to be positioned over ,the

positioned over the drum, to cover the core f comprisinga supportingdrum provide with a recess adapted to receive ar deiiated pneumatictube, a sleeve adapted to be positioned over the drum and tube to form atire building surface, and means to facilitate removal of the sleeve,upon completion of the` tire casing, to leave the latter in position tobe shaped by exiansion of the pneumatic tube.

device of the character described coinprising a supporting drum providedwith a recess adapted to receive a deflated pneumatic tube, a sleeveadapted toberemovably iccy i positioned over the drum to cover the tubeand form the building surface of the device, and means to preventrelative rotary movement between the sleeve and the drum.

6. A device of the character described comprising a supporting drumprovided Wit-l1 a recess adapted to receive a deflated pneumatic tube, asleeve adapted to be positioned over the drum and tube to form a tirebuilding, surface, means to preventprelative rotary movement between thesleeve and drum and means to facilitate removal of the sleeve, up-

`on completion of the tire casing, to leave the Y latter in position tobe shaped by expansion of the pneumatic tube. 7. A rigid cylindricalsleeve adapted to be positioned centrally over a tire building drum-toform a building surface and means associated with the sleeve to assurerotation of the sleeve with the drum.

In testimony whereof I have signed my name to the above specilication.

l HARRY L. SMITH.

